Question

an article was sold for Rs 330 with a profit 10 percentage. what was its cost price.

Answer 1

Let the CP be x

Profit = 10%

=> SP = x + 10/100 × x = 11x/10

but SP = 330

=> 11x /10 =330

=> x = 300 Rs

Answer 2

Sp = Mp — discount

discount = 18% = 0.18mp

Sp = Mp — 0.18Mp = 0.82 Mp

Mp = sp/0.82 = 5330/0.82 = 6500

Hope it helps.